COUNTY

Butler County Historical Society at the Senator Walter Lowrie House Museum, 123 W. Diamond St., has the ninth annual “Back When ...” calendar available. Cost is $10. Visit www.butlerhistory.com.

Harmony Museum, 218 Mercer St., offers tours from 1 to 4 p.m. daily, except when the museum is closed Mondays. Admission is $7 for adults, $6 for senior citizens, and $3 for youths 6 to 17. Call 724-452-7341.

PITTSBURGH

Carnegie Science Center, North Side, presents the Miniature Railroad & Village. Center admission is $18.95 for adults and $11.95 for children 3 to 12. MessFest! will be held Jan. 2. Visit CarnegieScienceCenter.org.

National Aviary, 700 Arch St., presents the Wings in Winter holiday show through Jan. 2 between 11 a.m. and 1:30 p.m. daily. Tickets for the show are $5 in addition to general admission of $14 for adults and $13 for senior citizens and children 2 to 12. Aviary hours are 10 a.m. to 5 p.m. daily. Visit www.aviary.org.

Children’s Museum, Allegheny Square, hosts “Daniel Tiger’s Neighborhood: A Grr-ific Exhibit” through Jan. 17. Hours are 10 a.m. to 5 p.m. daily. Admission is $16 for adults and $14 for children 2 to 18 and senior citizens. Visit www.pittsburghkids.org.